How vitamin D can help fight off certain diseases. | New Scientist Weekly podcast 190

TL;DR

• Lab-grown meat may not be as environmentally friendly as initially thought due to its high carbon footprint.

Transcript

hello welcome back to New Scientist weekly your curated selection of the week's science stories I'm Claire Wilson and I'm Rowan Hooper welcome to the show it's episode 190 and we're recording this on May the 10th coming up this week we've got an incredible entry to the Eurovision song contest which I can't wait to play and in an unrelated music sto... Read More

Key Insights

• 💗 Lab-grown meat production involves energy-intensive methods and a high carbon footprint.
• 🍖 Research indicates that lab-grown meat's global warming potential could be significantly higher than that of traditional meat.
• 💗 Transitioning to renewable energy sources may help reduce the environmental impact of lab-grown meat production.
• 🈴 Utilizing food-grade supplies instead of pharmaceutical-grade ingredients could lower costs and carbon emissions.
• 💗 The challenges of achieving sustainable lab-grown meat production highlight the need for continued research and development in the field.

Questions & Answers

Q: What is lab-grown meat and how is it produced?

Lab-grown meat, or cultivated meat, is made from stem cells collected from animals grown in a nutrient-rich growth medium in a lab setting. This process eliminates the need for animal farming but requires energy-intensive methods for production.

Q: Why does lab-grown meat have a high carbon footprint?

Lab-grown meat's production requires energy-intensive methods to obtain sugars, amino acids, salts, vitamins, and growth factors which have a large combined carbon footprint. Purifying these ingredients using ultra-filtration and chromatography adds to the process's carbon footprint.

Q: Can renewable energy help reduce the carbon footprint of lab-grown meat?

Using renewable energy to power the supply chains and facilities for lab-grown meat production could lower its carbon footprint. However, the high energy requirement for the production process poses a challenge to achieving significant reductions in carbon emissions.

Q: How can lab-grown meat companies mitigate the environmental impact of their products?

Lab-grown meat companies aim to switch from pharmaceutical-grade growth medium to food-grade supplies to reduce costs and carbon emissions. However, experts are skeptical that this shift could eliminate the need for high-purity ingredients due to the sensitivity of animal cell cultures to contaminants.

Summary & Key Takeaways

• Lab-grown meat, also known as cultivated meat, is produced from stem cells collected from animals in a growth medium that requires energy-intensive production.

• Despite cutting out the need for animal farming, the production process of lab-grown meat involves energy-intensive methods leading to a high carbon footprint.

• Researchers suggest that lab-grown meat's global warming potential could be 4 to 25 times higher than that of beef, casting doubt on its environmental benefits.